.:* L - In his installation, reverse of volume RG, Yasuaki Onishi uses the simplest materials - plastic sheeting and black hot glue - to create a monumental, mountainous form that appears to float in space. The process that he calls “casting the invisible” involves draping the plastic sheeting over stacked cardboard boxes, which are then removed to leave only their impressions. This process of reversing sculpture is Onishi’s meditation on the nature of the negative space, or void, left…